Display device

ABSTRACT

A display device including a substrate including a display area and a non-display area, a plurality of signal lines disposed in the display area and extending along a first direction and from the non-display area to the display area, a connection line extending from the non-display area and electrically connected to a respective signal line of the plurality of signal lines in the non-display area, and an initialization voltage line extending in a second direction intersecting the first direction, wherein the connection line overlaps the initialization voltage line in a thickness direction of the display device.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority from Korean Patent Application No.10-2019-0061685 under 35 U.S.C. § 119, filed on May 27, 2019 in theKorean Intellectual Property Office, the entire contents of which areherein incorporated by reference.

BACKGROUND 1. Technical Field

The present disclosure relates to a display device, and morespecifically, to a configuration therefor optimizing a size of anoverall display area as well as the quality of the display of an imageto be displayed in the display area.

2. Description of the Related Art

The importance of display devices has steadily increased with thedevelopment of multimedia technology. Accordingly, various types ofdisplay devices such as a liquid crystal display (LCD) device, anorganic light emitting diode (OLED) display device and the like havebeen used. Among them, the OLED display device is a display devicehaving an excellent viewing angle due to its self-light-emittingelement. As a result, the OLED display device has grown in popularityfor use in a multiplicity of applications.

The OLED display device includes a pixel circuit and a driver fordriving the pixel circuit. The driver may include a scan driver forproviding a scan signal to the pixel circuit, and a data driver forproviding a data signal to the pixel circuit. The driving circuit of thescan driver and the data driver may be disposed in a non-display areaadjacent to a display area, wherein the non-display area may be a typeof dead space in terms of functionality of the display device. Thus, itwould be desirable to limit a size of the non-display area, wherein aresult of doing so may be an increase in the size of the display area ofthe display device.

SUMMARY

The disclosure provides a display device capable of minimizing anon-display area of the display device and preventing deterioration of adisplay quality of an image to be displayed.

However, aspects of the disclosure are not restricted to those set forthherein. The above and other aspects of the disclosure will become moreapparent to one of ordinary skill in the art to which the disclosurepertains by referencing the detailed description of the disclosure givenbelow.

According to an aspect of the disclosure, there is provided a displaydevice including a substrate including a display area and a non-displayarea, a plurality of signal lines disposed in the display area andextending along a first direction and from the non-display area on thesubstrate to the display area, a connection line extending from thenon-display area and electrically connected to a respective signal lineof the plurality of signal lines in the non-display area, and aninitialization voltage line extending in a second direction intersectingthe first direction, wherein the connection line overlaps theinitialization voltage line in a thickness direction of the displaydevice.

The display device may further include a second conductive layer whichmay include the initialization voltage line, a third conductive layerdisposed on the second conductive layer, and which may includerespective signal line of the plurality of signal lines, and a fourthconductive layer disposed on the third conductive layer, and whichincludes the connection line.

The display device may further include a first source voltage linedisposed between the initialization voltage line and the connectionline, and wherein the first source voltage line may overlap theconnection line in the thickness direction of the display device.

The display device may further include a scan line disposed between thesubstrate and the initialization voltage line, and wherein the firstsource voltage line may overlap the scan line in the thickness directionof the display device.

The display device may further include a first conductive layer disposedbetween the substrate and the second conductive layer, and which mayinclude the scan line, and wherein the third conductive layer mayinclude the first source voltage line.

The connection line may include a horizontal portion extending in thesecond direction, and the initialization voltage line may be disposedbetween the horizontal portion and the scan line in plan view.

The horizontal portion may overlap the first source voltage line in thethickness direction of the display device.

The display device may further include an anode electrode disposedbetween the connection line and another connection line respectivelyconnected to another respective signal line of the plurality of signallines, wherein the horizontal portion may be offset from the anodeelectrode in the thickness direction of the display device.

The initialization voltage line may overlap the scan line in thethickness direction of the display device.

The display device may further include a coupling blocking layerdisposed between the initialization voltage line and the connectionline, wherein the coupling blocking layer overlaps the connection linein the thickness direction of the display device.

The display device may further include a first source voltage linedisposed between the initialization voltage line and the connectionline, wherein the coupling blocking layer may be electrically connectedto the first source voltage line.

According to an aspect of the disclosure, there is provided a displaydevice comprising a substrate including a display area and a non-displayarea, an initialization voltage line disposed on the substrate, aplurality of signal lines disposed over the display area and thenon-display area and extending in a first direction, a plurality ofconnection lines disposed in the display area and connected to thesignal lines, respectively, and an anode electrode disposed between afirst connection line and a second connection line of the plurality ofconnection lines, wherein each connection line includes a horizontalportion extending in a second direction intersecting the firstdirection, and the horizontal portion overlaps the initializationvoltage line in a thickness direction of the display device, and may beoffset from the anode electrode.

In an embodiment, the horizontal portion may include a first horizontalportion disposed adjacent to one side of the anode electrode and asecond horizontal portion disposed adjacent to another side of the anodeelectrode in plan view, and the second horizontal portion may include abent portion which may be bent to correspond to an edge of the anodeelectrode.

The first horizontal portion may include a first branch patternprotruding from one side of the first horizontal portion in the firstdirection intersecting the second direction and a second branch patternprotruding from another side of the first horizontal portion in adirection opposite to the first direction, and the second horizontalportion includes a third branch pattern protruding from one side of thesecond horizontal portion in the first direction and a fourth branchpattern protruding from another side of the second horizontal portion inthe direction opposite to the first direction.

The second branch pattern and the third branch pattern may be disposedadjacent to and spaced from each other to define a gap therebetween, andthe gap may overlap the anode electrode.

The anode electrode may be disposed between the second branch patternand the third branch pattern, and may be offset from the second branchpattern and the third branch pattern.

The display device may further include a second conductive layer whichmay include the initialization voltage line, a third conductive layerdisposed on the second conductive layer, and which may include theplurality of signal lines, and a fourth conductive layer disposed on thethird conductive layer, and which may include the connection line.

The display device may further include a scan line disposed between thesubstrate and the initialization voltage line, and wherein the scan linemay be offset from the horizontal portion in the thickness direction ofthe display device.

The display device may further include a first source voltage linedisposed between the initialization voltage line and the connectionline, and wherein the first source voltage line may overlap theconnection line in the thickness direction of the display device.

The display device may further include a first conductive layer disposedbetween the substrate and the second conductive layer, and which mayinclude the scan line, and wherein the third conductive layer mayinclude the first source voltage line.

According to an embodiment of the disclosure, a display device mayinclude connection lines for transmitting data signals to signal linesdisposed in a display area. Thus, it may be possible to reduce a deadspace of the display device.

Also, it may be possible to prevent parasitic capacitance from beingformed between the scan line and the connection line, thereby minimizinga coupling phenomenon between the two lines. Accordingly, it may bepossible to minimize or prevent non-uniformity in luminance among pixelsdue to distortion of the data signal, thereby improving the displayquality of an image to be displayed.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects and features of the disclosure will becomemore apparent by describing in detail embodiments thereof with referenceto the attached drawings, in which:

FIG. 1 shows a plan view of a display device according to an embodiment;

FIG. 2 shows a schematic cross-sectional view of a display deviceaccording to an embodiment;

FIG. 3 shows a plan view showing signal lines and connection lines of adisplay device according to an embodiment;

FIG. 4 shows an enlarged plan view of area A of FIG. 3;

FIG. 5 shows a cross-sectional view taken along line I-I′ of FIG. 4;

FIG. 6 shows a plan view showing the arrangement of connection lines andpixels according to an embodiment;

FIGS. 7 to 9 show plan views showing the arrangement of connection linesand pixels according to various embodiments;

FIG. 10 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel;

FIG. 11 shows a cross-sectional view taken along line II-II′ of FIG. 10;

FIG. 12 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to another embodiment;

FIG. 13 show a cross-sectional view taken along line II-II′ of FIG. 12;

FIG. 14 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment;

FIG. 15 shows a schematic cross-sectional view taken along line II-II′of FIG. 14;

FIG. 16 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment;

FIG. 17 shows a schematic cross-sectional view taken along line II-II′of FIG. 16;

FIG. 18 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment;

FIG. 19 shows a cross-sectional view taken along line II-II′ of FIG. 18;

FIG. 20 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment;

FIG. 21 shows a cross-sectional view taken along line II-II′ of FIG.driving chip 20;

FIG. 22 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment;

FIG. 23 shows a cross-sectional view taken along line II-II′ of FIG. 22;

FIG. 24 shows a plan view showing a connection line according to stillanother embodiment;

FIG. 25 shows a plan view showing a connection line according to stillanother embodiment;

FIG. 26 shows a plan view showing a connection line according to stillanother embodiment;

FIG. 27 shows a perspective view of a display device according to stillanother embodiment;

FIG. 28 shows a development view of the display device of FIG. 27; and

FIG. 29 shows a plan view showing signal lines and connection lines ofthe display device of FIG. 27.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The disclosure will now be described more fully hereinafter withreference to the accompanying drawings, in which embodiments are shown.This disclosure may, however, be embodied in different forms and shouldnot be construed as limited to the embodiments set forth herein.

Although the disclosure may be modified in various manners and haveadditional embodiments, embodiments are illustrated in the accompanyingdrawings and will be mainly described in the specification. However, thescope of the disclosure is not limited to the embodiments in theaccompanying drawings and the specification and should be construed asincluding all the changes, equivalents and substitutions included in thespirit and scope of the disclosure.

The drawings and description are to be regarded as only illustrative innature, and thus are not limiting of embodiments described and claimedherein. Some of the parts which are not associated with the descriptionmay not be provided in order to describe embodiments of the disclosureand like reference numerals refer to like elements throughout thespecification.

In the drawings, a size and thickness of each element are arbitrarilyrepresented for better understanding and ease of description, howeverthe disclosure is not limited thereto. In the drawings, the thickness oflayers, panels, regions, and other elements may be exaggerated forclarity. In the drawings, for better understanding and ease ofdescription, the thicknesses of some layers and areas may beexaggerated.

Further, in the specification, the phrase “in a plan view” means when anobject portion is viewed from above, and the phrase “in across-sectional view” means when a cross-section taken by verticallycutting an object portion is viewed from the side. Additionally, theterms “overlap” or “overlapped” mean that a first object may be above orbelow or to a side of a second object, and vice versa. The terms “face”and “facing” mean that a first object may directly or indirectly opposea second object. In a case in which a third object intervenes betweenthe first and second object, the first and second objects may beunderstood as being indirectly opposed to one another, although stillfacing each other. When a layer, region, substrate, or area, is referredto as being “on” another layer, region, substrate, or area, it may bedirectly on the other region, substrate, or area, or interveningregions, substrates, or areas, may be present therebetween. Conversely,when a layer, region, substrate, or area, is referred to as being“directly on” another layer, region, substrate, or area, interveninglayers, regions, substrates, or areas, may be absent therebetween.Further when a layer, region, substrate, or area, is referred to asbeing “below” another layer, region, substrate, or area, it may bedirectly below the other layer, region, substrate, or area, orintervening layers, regions, substrates, or areas, may be presenttherebetween. Conversely, when a layer, region, substrate, or area, isreferred to as being “directly below” another layer, region, substrate,or area, intervening layers, regions, substrates, or areas, may beabsent therebetween. Further, “over” or “on” may include positioning onor below an object and does not necessarily imply a direction based upongravity.

The spatially relative terms “below”, “beneath”, “lower”, “above”,“upper”, or the like, may be used herein for ease of description todescribe the relations between one element or component and anotherelement or component as illustrated in the drawings. It will beunderstood that the spatially relative terms are intended to encompassdifferent orientations of the device in use or operation, in addition tothe orientation depicted in the drawings. For example, in the case wherea device illustrated in the drawing is turned over, the devicepositioned “below” or “beneath” another device may be placed “above”another device. Accordingly, the illustrative term “below” may includeboth the lower and upper positions. The device may also be oriented inother directions and thus the spatially relative terms may beinterpreted differently depending on the orientations.

Throughout the specification, when an element is referred to as being“connected” to another element, the element may be “directly connected”to another element, or “electrically connected” to another element withone or more intervening elements interposed therebetween. It will befurther understood that when the terms “comprises,” “comprising,”“includes” and/or “including” are used in this specification, they or itmay specify the presence of stated features, integers, steps,operations, elements and/or components, but do not preclude the presenceor addition of other features, integers, steps, operations, elements,components, and/or any combination thereof.

It will be understood that, although the terms “first,” “second,”“third,” or the like may be used herein to describe various elements,these elements should not be limited by these terms. These terms areused to distinguish one element from another element or for theconvenience of description and explanation thereof. For example, when “afirst element” is discussed in the description, it may be termed “asecond element” or “a third element,” and “a second element” and “athird element” may be termed in a similar manner without departing fromthe teachings herein.

Unless otherwise defined, all terms used herein (including technical andscientific terms) have the same meaning as commonly understood by thoseskilled in the art to which this invention pertains. It will be furtherunderstood that terms, such as those defined in commonly useddictionaries, should be interpreted as having a meaning that isconsistent with their meaning in the context of the relevant art andwill not be interpreted in an ideal or excessively formal sense unlessclearly defined in the specification.

Hereinafter, embodiments will be described with reference to theaccompanying drawings. In the following description, an organic lightemitting display device may be used as an example of a display device.

FIG. 1 shows a plan view of a display device according to an embodiment.FIG. 2 shows a schematic cross-sectional view of a display deviceaccording to an embodiment.

Referring to FIGS. 1 and 2, a display device 1 may be a device fordisplaying a moving image or a still image. The display device 1 may beused as a display screen of various products such as televisions, laptopcomputers, monitors, billboards and the Internet of Things as well asportable electronic devices such as mobile phones, smart phones, tabletpersonal computers (tablet PCs), smart watches, watch phones, mobilecommunication terminals, electronic notebooks, electronic books,portable multimedia players (PMPs), navigation systems and ultra mobilePCs (UMPCs).

The display device 1 may include a display panel 10. The display panel10 may be a flexible substrate including a flexible polymer materialsuch as polyimide or the like. Accordingly, the display panel 10 may bebent, folded or rolled.

The display panel 10 may include a main region MR and a bending regionBR connected to one side of the main region MR. The display panel 10 mayfurther include a sub-region SR which may be connected to the bendingregion BR and overlaps the main region MR in a thickness direction ofthe display device 1. Herein, the thickness direction may be understoodto correspond to a direction DR3 (discussed below) that is a directionextending through the main region MR. In other words, the thicknessdirection may be a direction along a schematic cross-sectional view andpassing through each of the elements depicted in the schematiccross-sectional view.

The display panel 10 may include a display area DA for displaying ascreen, and a non-display area NDA excluding the display area DA. Thedisplay area DA may include pixels. Each pixel may include a lightemitting layer and a circuit layer for controlling the amount of lightemitted from the light emitting layer. The circuit layer may include adisplay wiring, a display electrode and at least one transistor. Thelight emitting layer may include an organic light emitting material. Thelight emitting layer may be encapsulated by an encapsulation layer. Adetailed configuration of the pixel will be described later. The displayarea DA may have a rectangular shape or a rectangular shape with roundedcorners. However, the disclosure may not be limited thereto, and thedisplay area DA may have various shapes such as a square, otherpolygons, a circle, an ellipse or the like.

The display area DA may be disposed in the main region MR. A peripheraledge portion of the display area DA in the main region MR, the bendingregion BR and the sub-region SR may be the non-display area NDA.However, the disclosure may not be limited thereto, and the bendingregion BR and the sub-region SR may also include the display area DA.

The main region MR may have a shape similar to an outer shape of thedisplay device 1 in plan view. The main region MR may be a flat regionlocated on one surface. However, the disclosure may not be limitedthereto, and at least one edge of the remaining edges except an edge(side) of the main region MR connected to the bending region BR may bebent in a curved shape or bent in a vertical direction.

In a case that at least one of the edges other than the edge of the mainregion MR connected to the bending region BR is curved or bent, thedisplay area DA may also be disposed on the corresponding edge. However,the disclosure may not be limited thereto, and, as an example, thenon-display area NDA that does not display a screen may be disposed onthe curved or bent edge. As another example, both the display area DAand the non-display area NDA may be disposed thereon.

The non-display area NDA may be located around the display area DA inthe main region MR. The non-display area NDA of the main region MR maybe placed in an area from the outer boundary of the display area DA tothe edge of the display panel 10. Signal lines DL, connection lines DMand/or driving circuits may be disposed in the non-display area NDA ofthe main region MR to apply a signal to the display area DA. Further,the outermost black matrix may be disposed in the non-display area NDAof the main region MR.

The bending region BR may be connected to the main region MR. Forexample, the bending region BR may be connected through one short sideof the main region MR. The width of the bending region BR in a seconddirection DR2 may be smaller than the width of the main region MR in thesecond direction DR2. A connection portion between the main region MRand the bending region BR may have an L-shaped cut portion.

In the bending region BR, the display panel 10 may be bent with acurvature in a direction opposite to a third direction DR3, i.e., adirection opposite to and passing through a display surface. The bendingregion BR may have a constant radius of curvature. However, thedisclosure may not be limited thereto, and the bending region BR mayhave a different radius of curvature for each section. The surface ofthe display panel 10 may be reversed as the display panel 10 is bent inthe bending region BR. In other words, one surface of the display panel10 facing upward may be changed to face outward through the bendingregion BR and then to face downward.

The sub-region SR may extend from the bending region BR. The sub-regionSR may extend in a direction parallel to the main region MR from a pointwhere bending is completed. The sub-region SR may overlap the mainregion MR in the third direction DR3, i.e., in the thickness direction,of the display panel 10. The sub-region SR may overlap the non-displayarea NDA of the edge of the main region MR and further overlap thedisplay area DA of the main region MR.

The width of the sub-region SR in the second direction DR2 may be equalto the width of the bending region BR in the second direction DR2.

A driving chip 20 may be disposed on the sub-region SR of the displaypanel 10. The driving chip 20 may include an integrated circuit fordriving the display panel 10. In an embodiment, the integrated circuitmay be a data driving integrated circuit that generates and provides adata signal. The driving chip 20 may be mounted on the display panel 10in the sub-region SR. The driving chip 20, which may be mounted on onesurface of the display panel 10 which may be the same surface as thedisplay surface, may be mounted on the surface of the display panel 10facing in the direction opposite to the third direction DR3 as thebending region BR is bent and reversed as described above such that theupper surface of the driving chip 20 faces in the direction opposite tothe third direction DR3.

The driving chip 20 may be attached onto the display panel 10 through ananisotropic conductive film or through ultrasonic bonding. The width ofthe driving chip 20 in the second direction DR2 may be smaller than thewidth of the display panel 10 in the second direction DR2. The drivingchip 20 may be disposed in a central portion of the sub-region SR in thesecond direction DR2. The left edge and the right edge of the drivingchip 20 may be separated from the left edge and the right edge of thesub-region SR, respectively.

A display driving substrate 30 may be connected to an end portion of thesub-region SR of the display panel 10. A pad portion may be provided atthe end portion of the sub-region SR, and the display driving substrate30 may be connected to the pad portion. The display driving substrate 30may be a flexible printed circuit board or film.

Signal lines DL and connection lines DM may be arranged in thesub-region SR, the bending region BR and the main region MR. The signallines DL and the connection lines DM may extend from the sub-region SRto the main region MR via the bending region BR. For example, the signallines DL and the connection lines DM may extend from the non-displayarea NDA and be disposed in the display area DA.

Hereinafter, the signal lines and the connection lines will be describedin detail.

FIG. 3 shows a plan view showing signal lines and connection lines of adisplay device according to an embodiment. FIG. 4 shows an enlarged planview of area A of FIG. 3. FIG. 5 shows a schematic cross-sectional viewtaken along line I-I′ of FIG. 4.

Referring to FIGS. 3 to 5, the display device 1 may include signal linesDL and connection lines DM. The arrangement of the signal lines DL andthe connection lines DM may be symmetrical with respect to a referenceaxis (not shown) extending in the first direction DR1 and passingthrough the center of the area of the display device 1. In the followingdescription, the signal lines DL and the connection lines DM disposed onthe left side of the display device 1 will be mainly described.

The signal lines DL may extend in the first direction DR1 and may besequentially arranged at specific intervals along the second directionDR2. The second direction DR2 may intersect the first direction DR1 andmay be perpendicular to the first direction DR1. The signal lines DL maybe, for example, data lines transmitting data signals.

Each of the signal lines DL may extend across the display area DA in thefirst direction DR1. One end of the signal line DL may be disposed inthe non-display area NDA. One end of the signal line DL may beelectrically connected to the connection line DM.

The connection lines DM may be electrically connected to the signallines DL, respectively. The connection lines DM may be disposed on alayer different from a layer on which the signal lines DL are disposed,and the connection lines DM may be insulated from the signal lines DLthrough an insulating layer, as will be described later with referenceto FIG. 5.

The connection lines DM may extend from the non-display area NDA to thenon-display area NDA via the display area DA. The connection lines DMmay be separated from each other at predetermined intervals. Theinterval between the connection lines DM may be substantially equal tothe interval between the signal lines DL.

Further, the connection lines DM may extend from the non-display areaNDA in the first direction DR1 (for example, upward), and extend in thesecond direction DR2 (for example, to the left), such that they mayswitch direction in the display area DA. The connection line DM mayextend to one end of the corresponding signal line DL in an areaadjacent to or intersecting the corresponding signal line DL. Forexample, the connection line DM may extend to the non-display area NDAwhere one end of the signal line DL may be disposed.

Each of the connection lines DM may include a horizontal portion DMAdisposed along the second direction DR2 and a vertical portion DMBdisposed along the first direction DR1. The vertical portion DMB of theconnection line DM may include a first vertical portion DMB1 and asecond vertical portion DMB2 disposed along the first direction DR1. Thehorizontal portion DMA of the connection line DM extends in the seconddirection DR2 from one end of the first vertical portion DMB1, and thesecond vertical portion DMB2 extends from one end of the horizontalportion DMA in a direction opposite to extension of the first verticalportion DMB1 in the first direction DR1.

As shown in FIG. 4, the vertical portion DMB of the connection line DMmay overlap the signal line DL in the display area DA in plan view.However, the disclosure may not be limited thereto. For example, thevertical portion DMB of the connection line DM may not overlap thesignal line DL in the display area DA in plan view. For example, thevertical portion DMB of the connection line DM may be disposed in aspace between a respective pair of signal lines DL.

Although FIGS. 3 and 4 show that the connection line DM is bent at aright angle, the disclosure may not be limited thereto.

The connection lines DM may not intersect each other in plan view and,thus, may be disposed to bypass other adjacent connection lines DM.Accordingly, the connection lines DM may have different lengths. Forexample, the length of the connection line DM disposed on a first sidemay be longer than the length of the connection line DM disposed on asecond side thereof.

The connection lines DM, such as those shown in area A of FIG. 3, may bedirectly connected one-to-one to the signal lines DL through firstcontact holes CNT1 located in the non-display area NDA. For example, asshown in FIG. 5, the signal lines DL may be formed by a third conductivelayer 130. In other words, the signal lines DL may be implemented by thethird conductive layer 130, such that the third conductive layer 130includes the signal lines DL that may thus be defined by the thirdconductive layer 130. The connection lines DM may be formed by a fourthconductive layer 140 (see FIG. 11). Similarly, the connection lines DMmay be implemented by the fourth conductive layer 140, such that thefourth conductive layer 140 includes the connection lines DM that maythus be defined by the fourth conductive layer 140. The signal lines DLand the connection lines DM may be insulated by a fourth insulatinglayer IL4. A connection line DM may extend to one end of a signal lineDL. The connection line DM may be electrically connected to the signalline DL through the first contact hole CNT1 which passes through thefourth insulating layer IL4 to expose one end of the signal line DL.

As described above, the display device 1 may include the connectionlines DM disposed in portions of the display area DA, and an imagesignal may be provided to the signal lines DL via the connection linesDM. Therefore, a dead space that may be required to connect the signallines DL to the driving chip 20 may be unnecessary. Herein, the term“dead space” may be understood as a space which is devoted toaccommodating one or more components that, either singularly orplurally, perform an intended function. In other words, no dead spacemay be necessitated to connect the signal lines DL to the driving chip20 since the image signal from the driving chip 20 may be provided tothe signal lines DL through the connection lines DM. As a result,overall dead space of the display device, such as in either the displayarea and/or the non-display area NDA, may be reduced or its increase maybe minimized or prevented.

Hereinafter, a relationship between the connection lines DM and thepixels P will be described in detail.

FIG. 6 shows a plan view showing the arrangement of connection lines andpixels according to an embodiment. FIGS. 7 to 9 show plan views showingthe arrangement of connection lines and pixels according to variousembodiments.

Referring to FIGS. 6 to 11, each pixel P may include sub-pixels R, G andB. The sub-pixels R, G and B may include a first sub-pixel R emittinglight in a first color, a second sub-pixel G emitting light in a secondcolor, and a third sub-pixel B emitting light in a third color. Thefirst sub-pixel R may be a red sub-pixel, the second sub-pixel G may bea green sub-pixel and the third sub-pixel B may be a blue sub-pixel, butthe disclosure may not be limited thereto. For example, one firstsub-pixel R, two second sub-pixels G and one third sub-pixel B may bedefined as one pixel P. The pixel P refers to a group of sub-pixelscapable of expressing gradation. Although FIG. 6 illustrates that thesecond sub-pixel G, the first sub-pixel R, the second sub-pixel G andthe third sub-pixel B may be sequentially arranged in the seconddirection DR2, the arrangement of the sub-pixels R, G and B may not belimited thereto.

The sub-pixels R, G and B may have different shapes and sizes. AlthoughFIG. 6 illustrates that the third sub-pixel B may have the largest sizeand the second sub-pixel G may have the smallest size, the sizes of thesub-pixels R, G and B are not limited thereto.

Each of the sub-pixels R, G and B may be disposed between the horizontalportions DMA of the connection lines DM in plan view. The horizontalportions DMA may include a first horizontal portion DM1 of a firstconnection line DM and a second horizontal portion DM2 of a secondconnection line DM. The first horizontal portion DM1 and the secondhorizontal portion DM2, which may be portions of the first and secondconnection lines DM that are each connected to different signal linesDL, may be spaced apart from each other without intersecting each other.The first horizontal portion DM1 and the second horizontal portion DM2may extend in the second direction DR2 and may be sequentially arrangedat specific intervals along the first direction DR1. In other words, thefirst horizontal portion DM1 and the second horizontal portion may bespaced from each other according to an interval of spacing along thefirst direction DR1.

The first horizontal portion DM1 may be disposed on one side of thesub-pixels R, G and B, and the second horizontal portion DM2 may bedisposed on the other side of the sub-pixels R, G and B. For example,the first horizontal portion DM1 may be disposed adjacent to one side ofthe sub-pixels R, G and B in the first direction DR1, and the secondhorizontal portion DM2 may be disposed adjacent to the other side of thesub-pixels R, G and B in the first direction DR1. The first horizontalportion DM1 and the second horizontal portion DM2 may be disposed so asnot to overlap the sub-pixels R, G and B.

An anode electrode ANO may be disposed corresponding to each pixel P.The anode electrode ANO may be disposed between the horizontal portionsDMA of the connection lines DM in plan view. For example, the anodeelectrode ANO may be disposed between the first horizontal portion DM1and the second horizontal portion DM2 in plan view. The anode electrodeANO may be disposed so as not to overlap the first horizontal portionDM1 and the second horizontal portion DM2.

The anode electrode ANO may include first to third anode electrodesANO1, ANO2 and ANO3 corresponding to the sub-pixels R, G and B,respectively. The first anode electrode ANO1 may be disposedcorresponding to the second sub-pixel G, the second anode electrode ANO2may be disposed corresponding to the first sub-pixel R, and the thirdanode electrode ANO3 may be disposed corresponding to the thirdsub-pixel B.

The horizontal portions DMA of the connection lines DM may be formed ina linear shape extending in the second direction DR2 as shown in FIG. 6,but may be partially deformed or bent.

As shown in FIGS. 7 to 9, one or more of the horizontal portions DMA mayinclude a bent portion BP which is partially bent. For example, as shownin FIG. 7, the first horizontal portion DM1 may be formed in a linearshape extending in the second direction DR2, and a second horizontalportion DM2′ may include the bent portion BP which is partially bentfrom the second direction DR2. The bent portion BP may be a region bentalong the edge of the anode electrode ANO. For example, the bent portionBP may be disposed in parallel with a specific gap from the edge of theanode electrode ANO. The bent portion BP of the second horizontalportion DM2′ may be bent along the edge of the first anode electrodeANO1 of the second sub-pixel G. For example, when the first anodeelectrode ANO1 includes an uneven portion, the bent portion BP of thesecond horizontal portion DM2′ may be bent to one side from the seconddirection DR2, along the uneven portion of the first anode electrodeANO1, bent to the other side, and then restored in the second directionDR2. Because the second horizontal portion DM2′ includes the bentportion BP, a distance between the second horizontal portion DM2′ andthe anode electrode ANO may be reduced. For example, the distance fromthe first horizontal portion DM1 to the second sub-pixel G may begreater than the distance from the second horizontal portion DM2′ to thesecond sub-pixel G.

Further, as shown in FIG. 8, the second horizontal portion DM2 may beformed in a linear shape, and the first horizontal portion DM1′ mayinclude the bent portion BP. The bent portion BP of the first horizontalportion DM1′ may be bent along the edge of the second anode electrodeANO2 of the first sub-pixel R. Further, the bent portion BP of the firsthorizontal portion DM1′ may be bent along the edge of the third anodeelectrode ANO3 of the third sub-pixel B. Because the first horizontalportion DM1′ includes the bent portion BP, a distance between the firsthorizontal portion DM1′ and the anode electrode ANO may be reduced. Forexample, a distance from the first horizontal portion DM1′ to the firstsub-pixel R may be greater than a distance from the second horizontalportion DM2 to the first sub-pixel R. Further, a distance from the firsthorizontal portion DM1′ to the third sub-pixel B may be greater than adistance from the second horizontal portion DM2 to the third sub-pixelB. However, the disclosure is not limited to the embodiments shown inFIGS. 7 and 8, and both of the first horizontal portion DM1′ and thesecond horizontal portion DM2′ may include the bent portion BP as shownin FIG. 9.

Hereinafter, the structure of the pixel P will be described in moredetail.

FIG. 10 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to an embodiment.

Referring to FIG. 10, the pixel P may further include a first scan lineGI, a second scan line GW, an emission control line EM, aninitialization voltage line VIL and a first source voltage line VDL.

The first scan line GI may transmit a first scan signal, the second scanline GW may transmit a second scan signal, and the emission control lineEM may transmit an emission control signal. The first scan line GI, thesecond scan line GW and the emission control line EM may be arrangedalong the second direction DR2 in plan view. The second scan line GW maybe disposed between the first scan line GI and the emission control lineEM in plan view.

The initialization voltage line VIL may transmit an initializationvoltage. The initialization voltage line VIL may be disposed along thesecond direction DR2 in plan view. The initialization voltage line VILmay be disposed on, i.e., adjacent to, one side of the first scan lineGI in plan view, but the disclosure is not limited thereto.

The signal line DL may transmit a data signal, and may be disposed alongthe first direction DR1 in plan view to intersect the first scan lineGI, the second scan line GW, the emission control line EM and theinitialization voltage line VIL.

The first source voltage line VDL may transmit a driving voltage and maybe disposed on, i.e., adjacent to one side of the signal line DL. Thefirst source voltage line VDL may be disposed along the first directionDR1 in plan view to intersect the first scan line GI, the second scanline GW, the emission control line EM and the initialization voltageline VIL.

The connection line DM may be disposed along the first direction DR1 orthe second direction DR2 to partially overlap the initialization voltageline VIL. The horizontal portion DMA of the connection line DM may bedisposed along the second direction DR2 to overlap the initializationvoltage line VIL. Accordingly, it may be possible to prevent couplingbetween the connection line DM and another line, and a detaileddescription thereof will be given later.

Each pixel P may include a capacitor C and transistors DT and ST1 to ST6connected to the first scan line GI, the second scan line GW, theemission control line EM, the signal line DL, the initialization voltageline VIL, the first source voltage line VDL.

Although FIG. 10 shows that the pixel P includes seven transistors DTand ST1 to ST6 and one capacitor C1, the disclosure is not limitedthereto.

The driving transistor DT may include a driving channel region DT_ACT, adriving gate electrode DT_G, a driving source region DT_S and a drivingdrain region DT_D. The driving channel region DT_ACT may overlap thedriving gate electrode DT_G. The driving gate electrode DT_G may includea first driving gate electrode DT_G1 and a second driving gate electrodeDT_G2. The second driving gate electrode DT_G2 may be disposed on thefirst driving gate electrode DT_G1, and the first driving gate electrodeDT_G1 and the second driving gate electrode DT_G2 may be connected toeach other through a second contact hole CNT2. The first driving gateelectrode DT_G1 may overlap the driving channel region DT_ACT, and thesecond driving gate electrode DT_G2 may be connected to a drain regionD2 of a second switching transistor ST2 through a third contact holeCNT3. The driving source region DT_S may be connected to a drain regionD1 of a first switching transistor ST1. The driving drain region DT_Dmay be connected to a source region S2 of the second switchingtransistor ST2 and a source region S6 of a sixth switching transistorST6.

The first switching transistor ST1 may include a first channel regionACT1, a first gate electrode G1, a first source region S1 and a firstdrain region D1. The first gate electrode G1 may be a portion of thesecond scan line GW and may be an overlapping region of the firstchannel region ACT1 and the second scan line GW. The first source regionS1 may be connected to the signal line DL through a fourth contact holeCNT4. The first drain region D1 may be connected to the source regionDT_S of the driving transistor DT.

The second switching transistor ST2 may include a second channel regionACT2, a second gate electrode G2, a second source region S2 and a seconddrain region D2. The second switching transistor ST2 may be turned on inresponse to the second scan signal received through the second scan lineGW to diode-couple the driving transistor DT. The second gate electrodeG2 may be a portion of the second scan line GW and may be an overlappingregion of the second channel region ACT2 and the second scan line GW.The second source region S2 may be connected to the drain region DT_D ofthe driving transistor DT. The second drain region D2 may be connectedto the gate electrode DT_G of the driving transistor DT.

The second switching transistor ST2 may be a dual transistor. Forexample, the second switching transistor ST2 may include two secondchannel regions ACT2 and two second gate electrodes G2 as shown in FIG.10.

The third switching transistor ST3 may include a third channel regionACT3, a third gate electrode G3, a third source region S3 and a thirddrain region D3. The third switching transistor ST3 may be turned on inresponse to the first scan signal received through the first scan lineGI to transmit the initialization voltage to the gate electrode DT_G ofthe driving transistor DT, and may perform an initialization operationfor initializing the gate voltage of the driving transistor DT. Thethird gate electrode G3 may be a portion of the first scan line GI andmay be an overlapping region of the third channel region ACT3 and thefirst scan line GI. The third source region S3 may be connected to thegate electrode DT_G of the driving transistor DT and the drain region D2of the second switching transistor ST2. The third drain region D3 may beconnected to the initialization voltage line VIL through a fifth contacthole CNT5.

The third switching transistor ST3 may be a dual transistor. Forexample, the third switching transistor ST3 may include two thirdchannel regions ACT3 and two third gate electrodes G3 as shown in FIG.10.

The fourth switching transistor ST4 may include a fourth channel regionACT4, a fourth gate electrode G4, a fourth source region S4 and a fourthdrain region D4. The fourth gate electrode G4 may be a portion of thefirst scan line GI and may be an overlapping region of the fourthchannel region ACT4 and the first scan line GI. The fourth source regionS4 may be connected to an anode electrode (not shown) of an organiclight emitting element. The fourth drain region D4 may be connected tothe initialization voltage line VIL through the fifth contact hole CNT5.

The initialization voltage line VIL may be connected to aninitialization connection electrode VIE through a sixth contact holeCNT6, and the initialization connection electrode VIE may be connectedto the drain region D3 of the third switching transistor ST3 through thefifth contact hole CNT5. The initialization connection electrode VIE maybe disposed to intersect the first scan line GI. Further, the anodeelectrode (not shown) may be connected to an anode connection electrodeANDE through an anode contact hole ANO_CNT, and the anode connectionelectrode ANDE may be connected to the source region S4 of the fourthswitching transistor ST4 through a seventh contact hole CNT7.

The fifth switching transistor ST5 may include a fifth channel regionACT5, a fifth gate electrode G5, a fifth source region S5 and a fifthdrain region D5. The fifth gate electrode G5 may be a portion of theemission control line EM and may be an overlapping region of the fifthchannel region ACT5 and the emission control line EM. The fifth sourceregion S5 may be connected to the source region DT_S of the drivingtransistor DT and the drain region D1 of the first switching transistorST1. The fifth drain region D5 may be connected to the first sourcevoltage line VDL through an eighth contact hole CNT8.

The sixth switching transistor ST6 may include a sixth channel regionACT6, a sixth gate electrode G6, a sixth source region S6 and a sixthdrain region D6. The sixth gate electrode G6 may be a portion of theemission control line EM and may be an overlapping region of the sixthchannel region ACT6 and the emission control line EM. The sixth sourceregion S6 may be connected to the drain region DT_D of the drivingtransistor DT and the source region S2 of the second switchingtransistor ST2. The sixth drain region D6 may be connected to the anodeelectrode (not shown) of the organic light emitting element. The fifthswitching transistor ST5 and the sixth switching transistor ST6 may besimultaneously turned on in response to the emission control signalreceived through the emission control line EM to cause a current to flowthrough the organic light emitting element.

A first electrode CE1 of the capacitor C1 may be substantially identicalto the gate electrode DT_G of the driving transistor DT, and a secondelectrode CE2 of the capacitor C1 may overlap the gate electrode DT_G ofthe driving transistor DT and may be connected to the first sourcevoltage line VDL through a ninth contact hole CNT9.

Hereinafter, a cross-sectional structure of the pixel P will bedescribed in detail.

FIG. 11 shows a cross-sectional view taken along line II-II′ of FIG. 10.

Referring to FIG. 11, each pixel P may include a substrate 101, a bufferlayer BF, a semiconductor layer ACT, a first insulating layer ILL afirst conductive layer 110, a second insulating layer IL2, a secondconductive layer 120, a third insulating layer IL3, a third conductivelayer 130, a fourth insulating layer IL4, a fourth conductive layer 140,a fifth insulating layer ILS, a first electrode layer 171, a pixeldefining layer 180 including an opening to expose the first electrodelayer 171, an organic layer 172 disposed in the opening of the pixeldefining layer 180, and a second electrode layer 173 disposed on theorganic layer 172 and the pixel defining layer 180.

Each of the layers described above may consist of a single layer, or astack of multiple layers. Other layers may be further disposed betweenthe layers.

The substrate 101 may support the respective layers disposed thereon.The substrate 101 may be formed of an insulating material such as apolymer resin. Examples of the polymeric material may includepolyethersulphone (PES), polyacrylate (PA), polyarylate (PAR),polyetherimide (PEI), polyethylene naphthalate (PEN), polyethyleneterephthalate (PET), polyphenylene sulfide (PPS), polyallylate,polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT),cellulose acetate propionate (CAP), or a combination thereof. Thesubstrate 101 may be a flexible substrate which may be bent, folded orrolled. An example of the material of the flexible substrate may bepolyimide (PI), but is not limited thereto. The substrate 101 may be arigid substrate made of glass, quartz, or the like.

The buffer layer BF may be disposed on the substrate 101. The bufferlayer BF may prevent diffusion of impurity ions, prevent penetration ofmoisture or external air, and perform a surface planarization function.The buffer layer BF may include silicon nitride, silicon oxide, siliconoxynitride, or the like.

The semiconductor layer ACT may be disposed on the buffer layer BF. Thesemiconductor layer ACT may form channels of the first to sixthswitching transistors ST1 to ST6 and the driving transistor DT of thepixel P. The semiconductor layer ACT may include polycrystallinesilicon. The polycrystalline silicon may be formed by crystallizingamorphous silicon.

In a case that the semiconductor layer ACT is made of polycrystallinesilicon and the semiconductor layer ACT may be doped with ions, theion-doped semiconductor layer ACT may have conductivity. Accordingly,the semiconductor layer ACT may include source regions and drain regionsas well as channel regions of the driving transistor DT and the first tosixth switching transistors ST1 to ST6. For example, the semiconductorlayer ACT may include the driving channel region DT_ACT of the drivingtransistor DT and the first to sixth channel regions ACT1 to ACT6 of thefirst to sixth switching transistors ST1 to ST6. Further, thesemiconductor layer ACT may include the driving source region DT_S andthe driving drain region DT_D located on both sides of the drivingchannel region DT_ACT, and the first to sixth source regions S1 to S6and the first to sixth drain regions D1 to D6 located on both sides ofthe first to sixth channel regions ACT1 to ACT6.

The source regions DT_S and S1 to S6 and the drain regions DT_D and D1to D6 may be connected to both sides of the respective channel regionsDT_ACT and ACT1 to ACT6 in plan view.

In another embodiment, the semiconductor layer ACT may includemonocrystalline silicon, low-temperature polycrystalline silicon,amorphous silicon, or an oxide semiconductor. The oxide semiconductormay include, for example, a binary compound (ABx), a ternary compound(ABxCy), or a quaternary compound (ABxCyDz) including indium, zinc,gallium, tin, titanium, aluminum, hafnium (Hf), zirconium (Zr),magnesium (Mg) and the like. In one embodiment, the semiconductor layerACT may include ITZO (an oxide including indium, tin and titanium) orIGZO (an oxide including indium, gallium and tin).

The first insulating layer IL1 may be disposed on the semiconductorlayer ACT. The first insulating layer IL1 may be disposed substantiallyover the entire surface of the substrate 101. The first insulating layerIL1 may be a gate insulating layer having a gate insulating function.The first insulating layer IL1 may include a silicon compound, a metaloxide, or the like. For example, the first insulating layer IL1 mayinclude silicon oxide, silicon nitride, silicon oxynitride, aluminumoxide, tantalum oxide, hafnium oxide, zirconium oxide, titanium oxide,or the like. The first insulating layer IL1 may be a single layer or amultilayer stack of different materials.

The first conductive layer 110 may be disposed on the first insulatinglayer IL1. The first conductive layer 110 may include at least one metalselected from the group consisting of molybdenum (Mo), aluminum (Al),platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au),nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca),titanium (Ti), tantalum (Ta), tungsten (W) and copper (Cu). The firstconductive layer 110 may be a single layer or a multilayer.

The first scan line GI, the second scan line GW and the emission controlline EM may be formed by the first conductive layer 110. In other words,the first scan line GI, the second scan line GW and the emission controlline EM may be implemented by the first conductive layer 110, such thatthe first conductive layer 110 includes the first scan line GI, thesecond scan line GW and the emission control line EM that may thus bedefined by the first conductive layer 110. Further, each of the firstdriving gate electrode DT_G1 of the driving transistor DT and the firstto sixth gate electrodes G1 to G6 of the first to sixth switchingtransistors ST1 to ST6 may be similarly implemented by the firstconductive layer 110 as a portion of either the first scan line GI orthe second scan line GW.

The second insulating layer IL2 may be disposed on the first conductivelayer 110. The second insulating layer IL2 may be disposed substantiallyover the entire surface of the substrate 101. The second insulatinglayer IL2 may insulate the first conductive layer 110 from the secondconductive layer 120.

The second insulating layer IL2 may be an interlayer insulating layer.The second insulating layer IL2 may include the same material as thefirst insulating layer IL1 or may include one or more materials selectedfrom the materials exemplified as the constituent materials of the firstinsulating layer IL1.

The second conductive layer 120 may be disposed on the second insulatinglayer IL2. The initialization voltage line VIL and the second gateelectrode DT_G2 of the driving transistor DT may be formed by the secondconductive layer 120. In other words, the initialization voltage lineVIL and the second gate electrode DT_G2 may be implemented by the secondconductive layer 10, such that the second conductive layer 120 includesthe initialization voltage line VIL and the second gate electrode DT_G2that may thus be defined by the second conductive layer 120.

The second conductive layer 120 may include at least one metal selectedfrom the group consisting of molybdenum (Mo), aluminum (Al), platinum(Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel(Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca),titanium (Ti), tantalum (Ta), tungsten (W) and copper (Cu). The secondconductive layer 120 may be formed from the same material as the firstconductive layer 110, but may not be limited thereto. The secondconductive layer 120 may be a single layer or a multilayer.

The third insulating layer IL3 may cover the second conductive layer120. The third insulating layer IL3 may insulate the second conductivelayer 120 from the third conductive layer 130. The third insulatinglayer IL3 may include the same material as the first insulating layerIL1 or may include one or more materials selected from the materialsexemplified as the constituent materials of the first insulating layerIL1.

The third conductive layer 130 may be disposed on the third insulatinglayer IL3. The third conductive layer 130 may include at least one metalselected from the group consisting of aluminum (Al), molybdenum (Mo),platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au),nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca),titanium (Ti), tantalum (Ta), tungsten (W) and copper (Cu). The thirdconductive layer 130 may be a single layer or a multilayer. For example,the third conductive layer 130 may have a stacked structure of Ti/Al/Ti,Mo/Al/Mo, Mo/AlGe/Mo, or Ti/Cu.

The third conductive layer 130 may include the signal line DL and thefirst source voltage line VDL.

The fourth insulating layer IL4 may cover the third conductive layer130. The fourth insulating layer IL4 may be a via layer. A bendinginsulating layer ILO may include an organic insulating material selectedfrom the group consisting of acrylic resin, epoxy resin, phenolic resin,polyamide resin, polyimide resin, unsaturated polyester resin,polyphenylene resin, polyphenylenesulfide resin and benzocyclobutene(BCB).

The fourth conductive layer 140 may be disposed on the fourth insulatinglayer IL4. The fourth conductive layer 140 may include the same materialas the third conductive layer 130 or may include one or more materialsselected from the materials exemplified as the constituent materials ofthe third conductive layer 130.

The fourth conductive layer 140 may include the connection line DM. Thehorizontal portion DMA of the connection line DM may be disposed so asnot to overlap the first scan line GI. For example, the horizontalportion DMA of the connection line DM may be offset from the first scanline GI. Further, the horizontal portion DMA may be disposed to overlapthe initialization voltage line VIL. The horizontal portion DMA maycompletely overlap the initialization voltage line VIL in the thicknessdirection.

In a case that the horizontal portion DMA of the connection line DM mayoverlap or face the first scan line GI, a data signal may be distorteddue to the coupling between the connection line DM and the first scanline GI.

In a case that the same scan signal is supplied to the first scan lineGI of one pixel and the second scan line GW of another pixel and theconnection line DM disposed in one pixel is connected to the signal lineDL of the other pixel, a data signal may be distorted due to thecoupling between the horizontal portion DMA of the connection line DMdisposed in one pixel and the first scan line GI. The distorted datasignal may be written in the signal line DL of the other pixel as aresult. Accordingly, a luminance difference between one pixel and theother pixel may occur, which may cause non-uniformity in luminance.

Therefore, it would be beneficial to prevent the aforementioneddistortion and resulting luminance difference among pixels which may becaused by a case in which the connection line DM and the first scan lineGI may be coupled.

Thus, the display device 1 according to an embodiment of the disclosuremay be configured such that the horizontal portion DMA of the connectionline DM does not overlap the first scan line GI. That is, the embodimentmay be configured such that the horizontal portion DMA of the connectionline DM may be offset from the first scan line so as to not overlap orface the first scan line GI. Accordingly, it may be possible to preventparasitic capacitance from being formed between the horizontal portionDMA of the connection line DM and the first scan line GI. Theinitialization voltage line VIL may be disposed between the connectionline DM and the first scan line GI to overlap or face the connectionline DM, thereby minimizing or preventing a coupling phenomenon betweenthe two lines, i.e., the connection line DM and first scan line GI.Because of such a lack of coupling, it may possible to prevent both adata signal from being distorted and the resulting non-uniformity inluminance among pixels. The display quality of an image to be displayedmay therefore be improved in comparison to the above described instancein which coupling of the connection line DM and the first scan line GImay occur.

The fifth insulating layer IL5 may cover the fourth conductive layer140. The fifth insulating layer IL5 may be a via layer. The fifthinsulating layer IL5 may include the same material as the fourthinsulating layer IL4 or may include one or more materials selected fromthe materials exemplified as the constituent materials of the fourthinsulating layer IL4.

The first electrode layer 171 may be disposed on the fifth insulatinglayer IL5. The first electrode layer 171 may have a stacked structureformed by stacking a material layer having a high work function, such asindium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) andindium oxide (In₂O₃), and a reflective material layer such as silver(Ag), magnesium (Mg), aluminum (Al), platinum (Pt), lead (Pb), gold(Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium(Li), calcium (Ca), or a mixture thereof, but is not limited thereto.The first electrode layer 171 having a high work function may bedisposed above the reflective material layer and disposed closer to theorganic layer 172. The first electrode layer 171 may have a multilayerstructure such as ITO/Mg, ITO/MgF, ITO/Ag and ITO/Ag/ITO, but may not belimited thereto.

The anode electrode ANO of the pixel P may be formed by the firstelectrode layer 171. In other words, the anode electrode ANO may beimplemented by the first electrode layer 171, such that the firstelectrode layer 171 includes the anode electrode ANO that may thus bedefined by the first electrode layer 171. The anode electrode ANO may bedisposed so as not to overlap or face the horizontal portion DMA of theconnection line DM. For example, the anode electrode may be offset fromthe horizontal portion DMA of the connection line DM. Thus, it may bepossible to prevent non-uniformity in luminance due to theabove-described coupling phenomenon.

The pixel defining layer 180 may be disposed on the first electrodelayer 171. The pixel defining layer 180 may include an opening exposingthe first electrode layer 171. The pixel defining layer 180 may beformed of an inorganic insulating material such as silicon oxide,silicon nitride, silicon oxynitride, hafnium oxide, aluminum oxide,titanium oxide, tantalum oxide and zinc oxide, or an organic insulatingmaterial such as acrylic resin, epoxy resin, phenolic resin, polyamideresin, polyimide resin, unsaturated polyester resin, polyphenyleneresin, polyphenylenesulfide resin and benzocyclobutene (BCB). The pixeldefining layer 180 may be a single layer or a multilayer stack ofdifferent materials.

The organic layer 172 may be disposed in the opening of the pixeldefining layer 180. The organic layer 172 may include an organic lightemitting layer, a hole injecting/transporting layer, and an electroninjecting/transporting layer.

The second electrode layer 173 may be disposed on the organic layer 172and the pixel defining layer 180. A cathode electrode CAT may be formedof the second electrode layer 173. In other words, the cathode electrodeCAT may be implemented by the second electrode layer 173, such that thesecond electrode layer includes the cathode electrode CAT that may thusbe defined by the second electrode layer. The cathode electrode CAT maybe disposed over the entire display area. The second electrode layer 173may include a material layer having a low work function, such as Li, Ca,LiF/Ca, LiF/Al, Al, Mg, Ag, Pt, Pd, Ni, Au Nd, Ir, Cr, BaF, Ba or acompound or mixture thereof (e.g., a mixture of Ag and Mg). The secondelectrode layer 173 may further include a transparent metal oxide layerdisposed on the material layer having a low work function.

As described above, in a case that the display device 1 may beconfigured such that the horizontal portion DMA of the connection lineDM does not overlap, e.g., is offset from, the first scan line GI, itmay be possible to prevent parasitic capacitance from being formedbetween the horizontal portion DMA of the connection line DM and thefirst scan line GI. The initialization voltage line VIL may be disposedbetween the connection line DM and the first scan line GI to overlap andface the connection line DM, thereby minimizing or preventing a couplingphenomenon between the two lines. That is, it may be possible to preventboth the data signal from being distorted and any resultingnon-uniformity in luminance among pixels.

FIG. 12 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to another embodiment. FIG. 13 shows aschematic cross-sectional view taken along line II-II′ of FIG. 12.

Referring to FIGS. 12 and 13, the embodiment may differ from theembodiment of FIGS. 10 and 11 in that a first source voltage line VDL′may extend to overlap the horizontal portion DMA of the connection lineDM.

The first source voltage line VDL′ may be disposed between theconnection line DM and the first scan line GI to overlap and face thehorizontal portion DMA of the connection line DM and the first scan lineGI. For example, the first source voltage line VDL′ may overlap and facethe horizontal portion DMA of the connection line DM in the thicknessdirection. Further, the first source voltage line VDL′ may be disposedto overlap and face the first scan line GI in the thickness direction.That is, the first source voltage line VDL′ may be disposed between boththe horizontal portion DMA of the connection line DM and the first scanline GI when viewed in the thickness direction. Thus, it may be possibleto effectively prevent coupling between the horizontal portion DMA ofthe connection line DM and the first scan line GI.

FIG. 14 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment. FIG. 15 is aschematic cross-sectional view taken along line II-II′ of FIG. 14.

Referring to FIGS. 14 and 15, the embodiment thereof may differ from theembodiment of FIGS. 10 and 11 in that an initialization voltage lineVIL′ may be disposed between the horizontal portion DMA of theconnection line DM and the first scan line GI in plan view.

The horizontal portion DMA of the connection line DM and the first scanline GI may be spaced apart from each other, and the initializationvoltage line VIL′ may be disposed in a space between the horizontalportion DMA of the connection line DM and the first scan line GI. Forexample, the horizontal portion DMA of the connection line DM may bedisposed adjacent a side of the initialization voltage line VIL′ suchthat the horizontal portion DMA of the connection line DM and the firstscan line GI do not overlap each other, and the first scan line GI maybe disposed adjacent another side of the initialization voltage lineVIL′. Thus, the horizontal portion DMA of the connection line DM and thefirst scan line GI may not overlap each other since they may each beoffset from each other and offset from the initialization voltage lineVIL′. In other words, the initialization voltage line VIL′ may bedisposed between the horizontal portion DMA of the connection line DMand the first scan line GI and may be spaced from each thereof whenviewed in the thickness direction. Thus, it may be possible to preventcoupling between the horizontal portion DMA of the connection line DMand the first scan line GI, thereby improving the display quality of animage to be displayed, as described above.

Though FIGS. 14 and 15 show a case where the horizontal portion DMA ofthe connection line DM may be disposed so as not to overlap theinitialization voltage line VIL′ in the thickness direction, the presentdisclosure may not be limited thereto. That is, the horizontal portionDMA of the connection line DM may be disposed to partially overlap theinitialization voltage line VIL′.

FIG. 16 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment. FIG. 17 showsa cross-sectional view taken along line II-II′ of FIG. 16.

Referring to FIGS. 16 and 17, the embodiment thereof may differ from theembodiment of FIGS. 14 and 15 in that the first source voltage line VDL′may extend to overlap the horizontal portion DMA of the connection lineDM.

The first source voltage line VDL′ may be disposed between theconnection line DM and the first scan line GI to overlap or face thehorizontal portion DMA of the connection line DM and the first scan lineGI. For example, the first source voltage line VDL′ may overlap thehorizontal portion DMA of the connection line DM in the thicknessdirection. Further, the first source voltage line VDL′ may be disposedto overlap the first scan line GI in the thickness direction. Forexample, the first source voltage line VDL′ may be further disposedbetween the horizontal portion DMA of the connection line DM and thefirst scan line GI. Thus, it may be possible to effectively preventcoupling between the horizontal portion DMA of the connection line DMand the first scan line GI, as described above.

FIG. 18 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment. FIG. 19 showsa schematic cross-sectional view taken along line II-II′ of FIG. 18.

Referring to FIGS. 18 and 19, the embodiment thereof may differ from theembodiment of FIGS. 10 and 11 in that an initialization voltage lineVIL″ includes an extension portion VIL_EP.

The initialization voltage line VIL″ may include an extension portionVIL_EP extending from a main portion of the initialization voltage lineVIL″ to a side thereof to define a periphery of such side. The extensionportion VIL_EP may extend from the initialization voltage line VIL″disposed in the second direction DR2 along a direction opposite to thefirst direction DR1, i.e., downward in FIG. 18. The extension portionVIL_EP may be disposed so as to overlap or face the first scan line GI.The width of the extension portion VIL_EP in the first direction DR1 maybe larger than the width of the first scan line GI in the firstdirection DR1. Because the extension portion VIL_EP of theinitialization voltage line VIL″ overlaps or faces the first scan lineGI, it may be possible to effectively prevent coupling between thehorizontal portion DMA of the connection line DM and the first scan lineGI.

FIG. 20 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment. FIG. 21 showsa schematic cross-sectional view taken along line II-II′ of FIG. 20.

Referring to FIGS. 20 and 21, the embodiment thereof may differ from theembodiment of FIGS. 18 and 19 in that the first source voltage line VDL′may extend to overlap the horizontal portion DMA of the connection lineDM.

The first source voltage line VDL′ may be disposed between theconnection line DM and the first scan line GI to overlap the horizontalportion DMA of the connection line DM and the first scan line GI. Forexample, the first source voltage line VDL′ may overlap the horizontalportion DMA of the connection line DM in the thickness direction.Further, the first source voltage line VDL′ may be disposed to overlapthe first scan line GI in the thickness direction. For example, thefirst source voltage line VDL′ may be further disposed between thehorizontal portion DMA of the connection line DM and the first scan lineGI. Thus, it may be possible to effectively prevent coupling between thehorizontal portion DMA of the connection line DM and the first scan lineGI, as described above.

FIG. 22 shows a plan view showing a schematic diagram of an equivalentcircuit of a pixel according to still another embodiment. FIG. 23 showsa cross-sectional view taken along line II-II′ of FIG. 22.

Referring to FIGS. 22 and 23, the embodiment thereof may differ from theembodiment of FIGS. 10 and 11 in that a display device may furtherinclude a coupling blocking layer CSL disposed between a connection lineDM′ and the first scan line GI.

The coupling blocking layer CSL may be disposed to extend along thesecond direction DR2 in plan view and completely overlap or face theconnection line DM′. Further, the coupling blocking layer CSL may bedisposed to completely overlap or face the first scan line GI in planview. By disposing the coupling blocking layer CSL to overlap or facethe connection line DM′ and the first scan line GI, it may be possibleto effectively reduce and/or prevent coupling between two lines such asthe connection line DM′ and the first scan line GI.

The coupling blocking layer CSL may be disposed to extend along thefirst direction DR1 and overlap or face the first source voltage lineVDL. The coupling blocking layer CSL may be electrically connected tothe first source voltage line VDL through a tenth contact hole CNT10.Thus, a resistance of the first source voltage line VDL may be reduced.

The coupling blocking layer CSL may be disposed on the fourth insulatinglayer IL4. The coupling blocking layer CSL may be formed by the fourthconductive layer 140. In other words, the coupling blocking layer CSLmay be implemented by the fourth conductive layer 140, such that thefourth conductive layer 140 includes the coupling blocking layer CSLthat may thus be defined by the fourth blocking layer 140.

The fifth insulating layer IL5 may be disposed on the fourth conductivelayer 140, and the connection line DM′ may be disposed on the fifthinsulating layer IL5. The connection line DM′ may be formed of a fifthconductive layer 150. In other words, the connection line DM′ may beimplemented by the fifth conductive layer 150, such that that the fifthconductive layer 150 includes the connection line DM′ that may thus bedefined by the fifth conductive layer 150. The fifth conductive layer150 may include the same material as the fourth conductive layer 140 ormay include one or more materials selected from the materialsexemplified as the constituent materials of the fourth conductive layer140.

A sixth insulating layer IL6 may be disposed on the fifth conductivelayer 150. The sixth insulating layer IL6 may be a via layer. The sixthinsulating layer IL6 may include the same material as the fifthinsulating layer IL5 or may include one or more materials selected fromthe materials exemplified as the constituent materials of the fifthinsulating layer IL5.

The first electrode layer 171 may be disposed on the sixth insulatinglayer IL6.

FIG. 24 shows a plan view showing a connection line according to stillanother embodiment.

Referring to FIG. 24, the embodiment thereof may differ from theembodiment of FIG. 6 in that the connection lines of the display device1 may include branch patterns DMP1, DMP2, DMP3 and DMP4.

The first horizontal portion DM1 of a connection line DM may include afirst branch pattern DMP1 and a second branch pattern DMP2, and a secondhorizontal portion DM2′ of another connection line DM may include athird branch pattern DMP3 and a fourth branch pattern DMP4.

The first branch pattern DMP1 may protrude from one side of the firsthorizontal portion DM1 in the first direction DR1, and the second branchpattern DMP2 may protrude from the other side of the first horizontalportion DM1 in a direction opposite to the first direction DR1.

The third branch pattern DMP3 may protrude from one side of the secondhorizontal portion DM2′ in the first direction DR1, and the fourthbranch pattern DMP4 may protrude from the other side of the secondhorizontal portion DM2′ in a direction opposite to the first directionDR1.

The first to fourth branch patterns DMP1, DMP2, DMP3 and DMP4 may bedisposed in parallel with each other. Further, the first to fourthbranch patterns DMP1, DMP2, DMP3 and DMP4 disposed along a same columnmay be aligned with each other, such that ends of, for example, thesecond branch pattern DMP2 and the third branch pattern DMP3 may or maynot be adjacent to each other.

The first to fourth branch patterns DMP1, DMP2, DMP3 and DMP4 may bearranged along the second direction DR2 at same intervals. The intervalat which the first to fourth branch patterns DMP1, DMP2, DMP3 and DMP4are arranged in the second direction DR2 may be the same as the intervalat which the vertical portions DMB of the connection lines DM arearranged in the second direction DR2. Accordingly, the first to fourthbranch patterns DMP1, DMP2, DMP3 and DMP4 may implement a grid patternshape in the display area DA together with the horizontal portions DMA.As a result, it may be possible to minimize irregularities of thevertical portions and the horizontal portions of the connection linesDM, thereby preventing the pattern from being visually recognized.

One end of the second branch pattern DP2 and one end of the third branchpattern DP3 may be spaced apart from each other. Thus, a gap GAP may bedefined between one end of the second branch pattern DP2 and one end ofthe third branch pattern DP3. The gap GAP may be disposed so as not tooverlap the anode electrode ANO. In other words, the gap GAP may beoffset from the anode electrode ANO. For example, the gap GAP may bedisposed in a space between the first to third anode electrodes ANO1,ANO2 and ANO3. One end of the second branch pattern DP2 and one end ofthe third branch pattern DP3 may be disposed so as not to overlap orface the anode electrode ANO.

FIG. 25 is a plan view showing a connection line according to stillanother embodiment.

Referring to FIG. 25, the embodiment thereof may differ from theembodiment of FIG. 24 in that the gap may be disposed to overlap theanode electrode ANO.

The gap may be disposed to overlap the first to third anode electrodesANO1, ANO2 and ANO3. The size of the gap GAP overlapping each of theanode electrodes ANO1, ANO2 and ANO3 may differ according to the sizesof the anode electrodes ANO1, ANO2 and ANO3. For example, the gap GAPoverlapping the first anode electrode ANO1 may be smaller than the gapGAP overlapping the second anode electrode ANO2. Further, the gap GAPoverlapping the first anode electrode ANO1 may be smaller than the gapGAP overlapping the third anode electrode ANO3.

As described above, the display device 1 according to the embodiment isconfigured such that the first to third anode electrodes ANO1, ANO2 andANO3 may overlap or face the gap GAP, thereby shielding the gap GAPdisposed in the display area DA. Thus, it may be possible to prevent aphenomenon in which non-uniformity in luminance among pixels may bevisually recognized, and external light may be reflected because of thegap GAP, thereby further improving the display quality of an image to bedisplayed.

FIG. 26 shows a plan view showing a connection line according to stillanother embodiment.

Referring to FIG. 26, the embodiment may differ from the embodiment ofFIG. 24 in that the branch patterns DMP1, DMP2, DMP3 and DMP4 may bedisposed so as not to overlap the anode electrode ANO, i.e., may beoffset from the anode electrode ANO.

The anode electrode ANO may be disposed so as not to overlap, or beoffset from, the gap GAP between the second pattern DMP2 and the thirdpattern DMP3 in plan view. That is, the anode electrode ANO may bedisposed between the second branch pattern DMP2 and the third branchpattern DMP3, which face each other. For example, the anode electrodeANO may be disposed in the gap GAP defined between one end of the secondbranch pattern DMP2 and one end of the third branch pattern DMP3.

FIG. 27 shows a perspective view of a display device according to stillanother embodiment. FIG. 28 shows a development view of the displaydevice of FIG. 27. FIG. 29 shows a plan view showing signal lines andconnection lines of the display device of FIG. 27.

Referring to FIGS. 27 and 29, a display device 1_2 according to theembodiment may include, as the display area DA, a main display area DA0and first to fourth sub-display areas DA1 to DA4.

The main display area DA0 may be located on one plane of the displaydevice 1_2 and have the largest area (or size) among the main displayarea DA0 and the first to fourth sub-display areas DA1 to DA4. Forexample, the main display area DA0 may be located on the upper surfaceof the display device 1_2. The main display area DA0 may have a planarshape such as a polygonal shape such as a rectangle, a circle, or anellipse.

The first to fourth sub-display areas DA1 to DA4 may be located on aplane different from the plane on which the main display area DA0 islocated. Each of the first to fourth sub-display areas DA1 to DA4 mayhave an area smaller than the area of the main display area DA0, and thefirst to fourth sub-display areas DA1 to DA4 may be located on differentplanes. The first to fourth sub-display areas DA1 to DA4 may extend fromthe sides of the main display area DA0.

The main display area DA0 and the first to fourth sub-display areas DA1to DA4 may be disposed in the main region MR.

In the development view of FIG. 28 for the display device 1 2, thenon-display area NDA may be disposed along the outermost edges of themain display area DA0 and the first to fourth sub-display areas DA1 toDA4.

The non-display area NDA may include first to fourth corner portions 21,22, 23 and 24. Each of the first to fourth corner portions 21, 22, 23and 24 may be disposed adjacent to a corner (i.e., a portion where twosides meet) of the main display area DA0.

The first to fourth corner portions 21, 22, 23 and 24 may besubstantially identical to each other except for their positions.Hereinafter, common features of the first to fourth corner portions 21,22, 23 and 24 will be described on the basis of the first corner portion21, and a redundant description will be omitted.

The first corner portion 21 may have a shape protruding outward from thecorner of the main display area DA0. The first corner portion 21 may belocated between the first sub-display area DA1 and the fourthsub-display area DA4, and an intersection angle between the firstsub-display area DA1 and the fourth sub-display area DA4 may beconverted into an obtuse angle. One end of the first corner portion 21may be located in the first sub-display area DA1 and the other end ofthe first corner portion 21 may be located in the fourth sub-displayarea DA4.

The first corner portion 21 may provide a space for passing or arrangingthe signal lines DL. In a case that the first sub-display area DA1 andthe fourth sub-display area DA4 of the display panel 10 may be bent, thefirst corner portion 21 may be folded inward (i.e., in a directiontoward an inner space or the center of gravity of the display device 1).The first corner portion 21 may be folded such that one end (i.e., afirst portion adjacent to the first sub-display area DA1) of the firstcorner portion 21 and the other end (i.e., a second portion adjacent tothe fourth sub-display area DA4) of the first corner portion 21 may faceeach other. One end and the other end of the first corner portion 21 maybe in contact with each other or may be coupled through a coupling layeror the like.

Since the first corner portion 21 may be folded inward in a case thatthe first sub-display area DA1 and the fourth sub-display area DA4 maybe bent, the first corner portion 21 may not be exposed to the outside.Therefore, the first to fourth corner portions 21, 22, 23 and 24 may beincluded in the non-display area NDA.

The non-display area NDA may further include the bending region BR andthe sub-region SR, and the bending region BR may be connected to atleast one of the first to fourth sub-display areas DA1 to DA4. Forexample, the bending region BR may be connected to one side of thefourth sub-display area DA4 (e.g., the lower side of the fourthsub-display area DA4 in the development view of the display device 1_2).

As shown in FIG. 28, in a case that the fourth sub-display area DA4 maybe bent vertically with respect to the main display area DA0, thebending region BR may be bent once again vertically with respect to thefourth sub-display area DA4 (i.e., bent at an angle of 180° with respectto the main display area DA0), and the sub-region SR located at one sideof the bending region BR may be disposed below the main display area DA0in a thickness direction of the main display area DA0. The sub-region SRmay overlap or face the main display area DA0 and may be disposed inparallel with the main display area DA0.

A driving chip IC may be disposed in the sub-region SR. As describedabove, as the sub-region SR may be bent and reversed from the maindisplay area DA0, and the upper surface of the driving chip IC may facein a direction opposite to the third direction DR3. The driving chip ICof the embodiment may be substantially the same as the driving chip 20described with reference to FIGS. 1 to 3.

The connection lines DM may extend along the first direction DR1 fromthe non-display area NDA on the lower side of the fourth sub-displayarea DA4, and extend in the direction opposite to the second directionDR2 by switching their direction in the display area DA. A respectiveconnection line DM may extend to one end of the corresponding signalline DL to be disposed in an area adjacent to the corresponding signalline DL that is connected to the respective connection line DM. That is,the connection lines DM may extend from the lower side of the fourthsub-display area DA4, through the main display area DA0, and to thenon-display area NDA and the first corner portion 21 on the lower sideof the first sub-display area DA1. The connection lines DM may bedirectly connected one-to-one to the corresponding signal lines DLthrough the first contact holes CNT1 located in the first corner portion21 and the non-display area NDA on the lower side of the firstsub-display area DA1.

As described above, since the display device 1_2 may include theconnection lines DM disposed via the display area DA, an additional deadspace required to connect the signal lines DL disposed in the firstsub-display area DA1 to the driving chip 20 may be unnecessary. That is,overall dead space of the display device may be reduced or its increasemay be minimized.

In concluding the detailed description, those skilled in the art willappreciate that many variations and modifications can be made to thedisclosed embodiments without substantially departing from theprinciples as described in connection therewith. Therefore, thedisclosed embodiments may be appreciated in a generic and descriptivesense only and not as limiting of the aforementioned principles.

What is claimed is:
 1. A display device, comprising: a substrateincluding a display area and a non-display area; a plurality of signallines disposed in the display area and extending in a first directionfrom the non-display area to the display area; a connection line beingelectrically connected to a respective signal line of the plurality ofsignal lines; and an initialization voltage line extending in a seconddirection intersecting the first direction, wherein the connection lineoverlaps the initialization voltage line in a thickness direction of thedisplay device.
 2. The display device of claim 1, further comprising: asecond conductive layer which includes the initialization voltage line,a third conductive layer disposed on the second conductive layer, andwhich includes the respective signal line of the plurality of signallines, and a fourth conductive layer disposed on the third conductivelayer, and which includes the connection line.
 3. The display device ofclaim 2, further comprising: a first source voltage line disposedbetween the initialization voltage line and the connection line, andwherein the first source voltage line overlaps the connection line inthe thickness direction of the display device.
 4. The display device ofclaim 3, further comprising: a scan line disposed between the substrateand the initialization voltage line, and wherein the first sourcevoltage line overlaps the scan line in the thickness direction of thedisplay device.
 5. The display device of claim 4, further comprising: afirst conductive layer disposed between the substrate and the secondconductive layer, and which includes the scan line, and wherein thethird conductive layer includes the first source voltage line.
 6. Thedisplay device of claim 5, wherein the connection line includes ahorizontal portion extending in the second direction, and theinitialization voltage line is disposed between the horizontal portionand the scan line in plan view.
 7. The display device of claim 6,wherein the horizontal portion overlaps the first source voltage line inthe thickness direction of the display device.
 8. The display device ofclaim 7, further comprising: an anode electrode disposed above theconnection line, wherein the horizontal portion is offset from the anodeelectrode in the thickness direction of the display device.
 9. Thedisplay device of claim 8, wherein the initialization voltage lineoverlaps the scan line in the thickness direction of the display device.10. The display device of claim 2, further comprising: a couplingblocking layer disposed between the initialization voltage line and theconnection line, and wherein the coupling blocking layer overlaps theconnection line in the thickness direction of the display device. 11.The display device of claim 10, further comprising: a first sourcevoltage line disposed between the initialization voltage line and theconnection line, wherein the coupling blocking layer is electricallyconnected to the first source voltage line.
 12. A display device,comprising: a substrate including a display area and a non-display area;an initialization voltage line disposed on the substrate; a plurality ofsignal lines disposed over the display area and the non-display area andextending in a first direction; a plurality of connection lines disposedin the display area and connected to the signal lines, respectively; andan anode electrode disposed between a first connection line and a secondconnection line of the plurality of connection lines, wherein eachconnection line includes a horizontal portion extending in a seconddirection intersecting the first direction, and the horizontal portionoverlaps the initialization voltage line in a thickness direction of thedisplay device, and is offset from the anode electrode.
 13. The displaydevice of claim 12, wherein the horizontal portion includes a firsthorizontal portion disposed adjacent to one side of the anode electrodeand a second horizontal portion disposed adjacent to another side of theanode electrode in plan view, and the second horizontal portion includesa bent portion which is bent to correspond to an edge of the anodeelectrode.
 14. The display device of claim 13, wherein the firsthorizontal portion includes a first branch pattern protruding from oneside of the first horizontal portion in the first direction intersectingthe second direction and a second branch pattern protruding from anotherside of the first horizontal portion in a direction opposite to thefirst direction, and the second horizontal portion includes a thirdbranch pattern protruding from one side of the second horizontal portionin the first direction and a fourth branch pattern protruding fromanother side of the second horizontal portion in the direction oppositeto the first direction.
 15. The display device of claim 14, wherein thesecond branch pattern and the third branch pattern are disposed adjacentto and spaced from each other to define a gap therebetween, and the gapoverlaps the anode electrode.
 16. The display device of claim 14,wherein the anode electrode is disposed between the second branchpattern and the third branch pattern, and is offset from the secondbranch pattern and the third branch pattern.
 17. The display device ofclaim 16, further comprising: a second conductive layer which includesthe initialization voltage line, a third conductive layer disposed onthe second conductive layer, and which includes the plurality of signallines, and a fourth conductive layer disposed on the third conductivelayer, and which includes the plurality of connection lines.
 18. Thedisplay device of claim 17, further comprising: a scan line disposedbetween the substrate and the initialization voltage line, wherein thescan line is offset from the horizontal portion in the thicknessdirection of the display device.
 19. The display device of claim 18,further comprising: a first source voltage line disposed between theinitialization voltage line and the connection line, wherein the firstsource voltage line overlaps the connection line in the thicknessdirection of the display device.
 20. The display device of claim 19,further comprising: a first conductive layer disposed between thesubstrate and the second conductive layer, and which includes the scanline, and wherein the third conductive layer includes the first sourcevoltage line.